Proloy is a 2013 Indian Bengali language socio-political action-crime thriller film co-written and directed by Raj Chakraborty, produced by Shree Venkatesh Films, starring Parambrata Chatterjee, Paran Bandopadhyay, Saswata Chatterjee, Rudranil Ghosh, Supriyo Dutta and Mimi Chakraborty in lead roles. This movie is inspired on the life of Barun Biswas, a social activist and teacher. The film's music is by Indraadip Dasgupta in his second collaboration with Banerjee, with 2 additional tracks by Nilesh Dasgupta. The film was critically and commercially well received and the performances along with the direction was praised. Due to multiple creative differences, this was Sonali Banerjee's last film with Shree Venkatesh Films. Sonali Banerjee named the film Roshni after her sister who was raped and killed and said that the movie was a tribute to her. Throughout the years, the film has gained a cult status and is often regarded as Raj Chakraborty's best film.